is 2 15729877 - 1
has 4735165 decimal digits
takes 8.601 GHz-days to do one PRP test
Last-known PrimeNet details:
Exponent is not assigned to anyone
-unknown- L-L tests remaining
ResidueStatus
L-L-unknown--unknown-
PRP-unknown--unknown-

 Trial FactoringP-1 FactoringCombined
LimitGHz-daysProbabilityB1B2GHz-daysProbabilityGHz-daysProbabilityProb over default TF
Actual2671.889064.1791%----1.889064.1791%0.0000%
PrimeNet2650.463863.0769%7000022000000.14754.3079%0.611364.6675%1.5906%
GPU722697.589865.2174%11000028000000.20343.1173%7.793266.3017%1.0843%
Difference-2-5.7008-1.0383%-110000-2800000-0.2034-3.1173%-5.9042-2.1226%-2.1226%

Known prime factors (2 factors, 129.9 bits, 0.00082606% known):
Remaining cofactor is PRP status unknown

P-1GHz-days
exponentfactordigitsbits*kdate foundmin B1min B2min. TFmin. P-1normal P-1
1572987715718910610460641131960.44749965141528
23 × 32 × 307 × 2260457
2001-04-2930722604570.01660.09790.1824
157298778294273016682604515212169.49126364710342880
25 × 33 × 5 × 72 × 13 × 41 × 53 × 4409
2021-08-1053440910.3540.00020.0004

1 Composite Factors:
exponentprime factorscomposite factordigitsbits*
15729877130376936127989582411501559173329436587340129.938
P-1 results:
Exponent "15729877" not found


P+1 Factoring results:
dateuseridcompidb1b2startfactorSmoothdigitsbits*ghz-days
2021-08-10T06:56:34ATHec2-P_110000010000027P-12169.4910.111


Trial Factoring results:
 BitsFactorGHz-Daysworth
dateuseridcompidfromtofactorbits*digitsspentsaved
2001-04-29T00:00:00David Barleyv4_computers??60.447190.00717.950.014
2001-01-28T00:00:00Net_Forcev4_computers?258--0.002--


ECM factoring results:
Exponent "15729877" not found


Lucas-Lehmer results:
Exponent "15729877" not found


PRP results:
Exponent "15729877" not found


P-1 factor-bounds graph:
B1 = 100000 (P-1 stage 1)
100
101
102
103
104
105
100
101
102
103
104
105
106
107
TF factor-bounds graph:
267
258
2
250
260
270
280
290
2100
Last modified: 2021-08-10T06:56:34+00:00